WONPIL, Kei's 'Good-Bye Days (From "Midnight Sun" Original Musical Soundtrack, Pt. 2) [with Kei]' came out on April 26, 2021. With this song being around four minutes long, at 3:54, the duration of this song is pretty average compared to other songs. This track is safe for children and doesn't appear to contain any foul language, since the "Explicit" tag was not present in this track. The track order of this song in Wonpil's "Meet Me When The Sun Goes Down (From "Midnight Sun" Original Musical Soundtrack, Pt. 2)" album is number 2 out of 2. Good-Bye Days (From "Midnight Sun" Original Musical Soundtrack, Pt. 2) [with Kei] is below average in popularity right now. Although the tone can be danceable to some, this track does projects more of a negative sound rather than a postive one.

Good-Bye Days (From "Midnight Sun" Original Musical Soundtrack, Pt. 2) [with Kei] テンポ

We consider the tempo marking of Good-Bye Days (From "Midnight Sun" Original Musical Soundtrack, Pt. 2) [with Kei] by WONPIL, Kei to be Andante (at a walking pace) because the track has a tempo of 80 テンポ, a half-time of 40テンポ, and a double-time of 160 テンポ. Based on that, the speed of the song's tempo is slow. The time signature for this track is 4/4.

Good-Bye Days (From "Midnight Sun" Original Musical Soundtrack, Pt. 2) [with Kei] キー

The music key of this track is A Major. This also means that this song has a camelot key of 11B. So, the perfect camelot match for 11B would be either 11B or 12A. While, 12B can give you a low energy boost. For moderate energy boost, you would use 8B and a high energy boost can either be 1B or 6B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 11A or 10B will give you a low energy drop, 2B would be a moderate one, and 9B or 4B would be a high energy drop. Lastly, 8A allows you to change the mood.